Air-preheating attachment for internal-combustion engines



Jan. 30, 1923. 1,443,414.

. w. c. JOHNSON.

MR PREHEATING ATTACHMENT FOR INTERNAL COMBUSTIUN ENGINES.

TILED NOV. 9. 1918.

Fig./

Patented Jan. 3%, 1923.

s [PATENT OFFICE.

WILLIAM G. JOHNSONQOF MINNEAPOLIS, MINNESOTA.

AIR-PREHEATING ATTACHMENT FOB INTERNAL-COMBUSTION ENGI NEs.

Application flled November 9, 1918.

Be it known tha I :i ritize Min H1 at new boat tion following to be a full. swription abhpcrtains to mainand Elli polis. in the county e of Minnesotiu Vii/111A]! C. Johnson, :1 ol" the United States, residing at of Hennepin and invented certain and useful improvements in Air-Preing Attachments for Engines; and I do b others skilled in the a v invention has For its xtremriy simple and preheating attachment fo tion stated. the invention d vices and ilimllllltltl engines:

tilt? of the inreution. sar -h as Wlll enand to such ronsists of the novelons of devices herein- Internal-Combusereby declare the er. and exact de rt to which it apuse the same.

object to provide ighly efiicient air internal combusends, generally after described an'l defined in the claims.

Particularly ada} fold is nevertheless. rapabhof application to various other types of e this ilnpl'e L lied for app! of the engines of Fore re invention is illusira panying drawings Win-rel indicate liltr wed preheater is nation to the exhaust. mind I automobiles, but

ugines.

ted in the accomu like rharacters mrls throughout the several Referring to the drmvmgs.

a view in side elevation showing,

1e engine and asiutoniohile, such as a rv improved ailn it'd thereto;

g. :3 is a side elevation of the air pre- :Xlillilfwt manifold, both being iyable from the engine, some parts be- \ll'WH.

Fig. i is in diagram. portions of ti sociated devices ol' an 2 Ford, and illustrating n preheating derive appl F1 heater and the renu in;{ broken nuay and son section;

Fig. 35 is a. left end shown in Fig. 2; and

g. 4 is an enlarged section on the line of Fig.1.

ie parts being in elevation of the parts lit the ordinary parts of the automobile illustrated in the dr iudirates the l \ll1l(l( Ii the intake nuunlold bore the n Ill a T1 tor. the

tan.

awings. the numeral 5 r casting, the numeral the numeral 7 the carnumeral h the exhaust manifold, .ieral 5) tinradiator and the numeral ie improved air preheater is preferably made from sheet metal and the body 11 nd an inne The trough structure 1 form a housan outer side clamping plate 1' side trs'ulgh-lde structure 3 has a transverse of the air, I run a Serial No. 261,840.

end flange 14, and beyond this interior of the body, formed as leads to the upper portion of a depending air tube 15. The said body is open at its front end for the admission of air and when it is clamped onto the exhaust manifold 8, as best shown in Figs. 2 and 4, it will be firmly held in position and there will be an air space or channel 16 over the entire top and portion of the sides of such manifold. This channel 16 directs the air which is drawn in from the front over the hot exhaust mani fold and into the upper end of the depending tube 15. There will be sufficient spring in the body of the preheater to securely hold the same on the manifold and the air drawn through the channel 16 will be heated to quite high temperature before it passes into the tube 15. From the tube 1:1 the hot or warm air is directed to the air intake of the carburetor 7 preferably through an adjustable elbow N that is telescoped into the said air intake port and into the lower end of the tube 15. I

It is a well known fact that moistened air increases the eflicieuuy of an internal coinbustion engine. To provide for moistening flexible. tube 18 into the receiving end of the trough 13 and air channel 1(5 and connect the front end of said tube 18 to the top of the radiator. that. is either directly to the top of the 'upper water pan thereof, as shown in Fig. 1. or, if desired. indirectly to the said upper pan through the customary overflow tube not shown. "ith this arrangement, the moist vapor is drawn from the radiator to moisten the warm air delivered to the carbureter through the preheating device.

The above described attachment or preheating device may be made at very small cost and. in practice, has been found highly efiicient for the purposes had in view. Prefflange 14 the above stated,

.erably. the interior of the air channel 16 is similar heat of a body of through said tube. it will run into the trough 1 but the end flange 14 will pre vent the some from running into the air tube i5. Voter will thus be prevented from getting to the carburetor, and as the button: of the trough 13 is forwardly inrlitaed, such water will run downwarr and i niwerd and out of the front end of said trough.

la is rihlent that with the air prehater applied .=1 described, the air, artly by the action of the fan and partly liy the movement of the external air under forward movement of the automobile will be forced through the air channel of the preheater, {her-eh greatly assisting the suction pro din-ed in the carburetor in drawing the preheated air to the carburetor.

What 1 claim is:

t. An air preheating device adapted to he applied to the exhaust manifold of intermil vomlmstion engines having in combination. a sheet metal housing bent to form a. inn-row heating chamber directly over said nmnitold and a vaporizing trough at the side of said manifold adapted to carry off the rondensed moisture, a vapor tuhe con nea'lvd from the to 1+ of the radiator into the said trough. said housing having an open end and an air tube an opening into said trough at one end and adapted to be connected to the carburetor at its other end.

2. An air preheziting device adapted to he applied to the exhaust manifold of internal combustion engines having in o0mhimition a housing' bent to form a narrow heating chamber over said manifold and u runner-ting vaporizing trough at the side vi the said nmnifoid. said housing having so open end. an air tube opening into said trough and adapted to be connected with the 1-21 rlnlretot' at its other end and a transverse upright flange at the bottom of the said trough operative to prevent condensed water from running into the said air-tube.

3. An air preheating device for internal combustion engines in the form of a channet-shaped housing adapted to he clam )ed onto opposite sides of the exhaust mani old of the engine, said housing, at one side, being in the form of a trough that terminates short of the rear end of said housing, said housing, at its rear end, beyond said trough, having 11 depending air tube adapted for connection to the carbureter of the engine, the said housing being of-sheet metal and the sides thereof having a spring yielding action adapting said housing to adjust itself to the exhaust manifold and to frictionally clamp itself in position thereon.

4. An air preheating device eds ted to be applied to the exhaust manifold of an automobile engine comprising a sheet metal housing extending longitudinally over said manifold having a vertical side contacting one side of said manifold, an upwardly converging top portion, and a rectangular trough formed at its other side, the inner side of which trough contacts the other side of said manifold. said housing and trough having an open front end, a conduit entering the front end of the trough and being adapted to b connected to the radiator of the engine, a downwardly extending conduit communicating with the rear end of said housing. said trough having a vertically extending end portion adjacent said latter conduit adapted to being drawn into said con nit.

in testimony whereof I aliix my signature in presence of two witnesses.

WILLIAM JOHNSON.

Witnesses BERNICE G. BAUMANN,

EVA E. Komo.

)revent moisture. 

